Temporal and spatial changes in nutrients and chlorophyll- in a shallow lake, Lake Chaohu, China: An 11-year investigation
文献类型：EI期刊论文
| 作者 | Yan Weijin |
| 发表日期 | 2013 |
| 关键词 | Lakes Chlorophyll Eutrophication Loading Nitrogen Nutrients Phosphorus River pollution Water quality |
| 英文摘要 | Temporal and spatial changes of total nitrogen (TN), total phosphorus (TP) and chlorophyll-a (Chl-a) in a shallow lake, Lake Chaohu, China, were investigated using monthly monitoring data from 2001 through 2011. The results showed that the annual mean concentration ranges of TN, TP, and Chl-a were 0.08-14.60 mg/L, 0.02-1.08 mg/L, and 0.10-465.90 g/L, respectively. Our data showed that Lake Chaohu was highly eutrophic and that water quality showed no substantial improvement during 2001 through 2011. The mean concentrations of TP, TN and Chl-a in the western lake were significantly higher than in the eastern lake, which indicates a spatial distribution of the three water parameters. The annual mean ratio of TN:TP by weight ranged from 10 to 20, indicating that phosphorus was the limiting nutrient in this lake. A similar seasonality variation for TP and Chl-a was observed. Riverine TP and NH4+ loading from eight major tributaries were in the range of 1.56 104-5.47 104 and 0.19 104-0.51 104 tons/yr over 2002-2011, respectively, and exceeded the water environmental capability of the two nutrients in the lake by a factor of 3-6. Thus reduction of nutrient loading in the sub-watershed and tributaries would be essential for the restoration of Lake Chaohu. 2013 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. |
| 出处 | Journal of Environmental Sciences (China)
 |
| 卷 | 25期:6页:1117-1123 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31212]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yan Weijin. Temporal and spatial changes in nutrients and chlorophyll- in a shallow lake, Lake Chaohu, China: An 11-year investigation. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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